中国海拔高度（DEM）空间分布数据来源于美国奋进号航天飞机的雷达地形测绘SRTM（Shuttle Radar Topography Mission，SRTM）数据。该数据集为基于最新的SRTM V4.1数据经重采样生成，数据采用WGS84椭球投影。
", "ds_source": "数据来源于资源环境科学与数据中心：https://www.resdc.cn/data.aspx?DATAID=123", "ds_process_way": "
以SRTM 500m 分辨率DEM数据为数据源，进行数据拼接、重采样等影像处理，再利用甘肃省范围区域边界裁剪，生成空间分辨率为500m的DEM数据产品。", "ds_quality": "
数据质量良好。", "ds_acq_start_time": "2023-10-09 00:00:00", "ds_acq_end_time": "2023-10-16 00:00:00", "ds_acq_place": "甘肃省", "ds_acq_lon_east": 108.7075, "ds_acq_lat_south": 32.596111111111114, "ds_acq_lon_west": 92.33777777777777, "ds_acq_lat_north": 42.79333333333333, "ds_acq_alt_low": 578.0, "ds_acq_alt_high": 5748.0, "ds_share_type": "login-access", "ds_total_size": 5143892, "ds_files_count": 2, "ds_format": "tif", "ds_space_res": "500", "ds_time_res": "", "ds_coordinate": "WGS84", "ds_projection": "/", "ds_thumbnail": "f2d97e3d-b6bd-4d0c-aa20-32c22ffe6071.png", "ds_thumb_from": 2, "ds_ref_way": "", "paper_ref_way": "", "ds_ref_instruction": "", "ds_from_station": null, "organization_id": "526ff655-4cd4-4650-bb86-6fd3481dfb65", "ds_serv_man": "敏玉芳", "ds_serv_phone": "09314967596", "ds_serv_mail": "ncdc@lzb.ac.cn", "doi_value": "", "subject_codes": [ "170.45" ], "quality_level": 3, "publish_time": "2023-10-24 16:05:04", "last_updated": "2025-05-29 16:22:19", "protected": false, "protected_to": null, "lang": "zh", "cstr": "11738.11.NCDC.GSEER.DB4049.2023", "i18n": { "en": { "title": "Gansu Province 500m Resolution Digital Elevation Model (DEM) Dataset", "ds_format": "tif", "ds_source": "
The data comes from the Resource and Environmental Science and Data Center: https://www.resdc.cn/data.aspx?DATAID=123", "ds_quality": "
The data quality is good.", "ds_ref_way": "", "ds_abstract": "
The spatial distribution data of China's altitude above sea level (DEM) is sourced from the Shuttle Radar Topography Mission (SRTM) data of the US space shuttle Endeavour. This dataset is generated by resampling based on the latest SRTM V4.1 data, using WGS84 ellipsoidal projection.
", "ds_time_res": "", "ds_acq_place": "Gansu Province", "ds_space_res": "500", "ds_projection": "/", "ds_process_way": "Using SRTM 500m resolution DEM data as the data source, perform image processing such as data stitching and resampling, and then use regional boundary cropping within Gansu Province to generate DEM data products with a spatial resolution of 500m.", "ds_ref_instruction": "" } }, "submit_center_id": "ncdc", "data_level": 0, "license_type": "CC BY 4.0", "doi_reg_from": "reg_local", "cstr_reg_from": "reg_local", "doi_not_reg_reason": null, "cstr_not_reg_reason": null, "ds_topic_tags": [ "500m", "DEM", "甘肃省" ], "ds_subject_tags": [ "地理学" ], "ds_class_tags": [], "ds_locus_tags": [ "甘肃省" ], "ds_time_tags": [], "ds_contributors": [ { "true_name": "张耀南", "email": "yaonan@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_meta_authors": [ { "true_name": "敏玉芳", "email": "myf@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "ds_managers": [ { "true_name": "李红星", "email": "lihongxing@lzb.ac.cn", "work_for": "中国科学院西北生态环境资源研究院", "country": "中国" } ], "category": "遥感及产品" }